Product catalogue: Automatic control and heat ... - Polna S.A.

Table 21: SW socket welding ends.
DN D 2
K
25 34
40 48,7
13
50 61 16
VALVE ACTUATOR:
Pneumatic: - diaphragm multi-spring actuator as per Table 21:
P1/R1 - cast yoke, no handwheel
P1B/R1B - cast yoke, side-mounted
P/R
- column type, no handwheel
PN/RN - column type, top-mounted handwheel
NOTE: P - direct action; air-to-close
R - reverse action; air-to-open
Table 22: Pneumatic actuators.
Type Size Diaphragm effective area [cm 2 ] Stroke [mm] Revolutions per stroke
P/R ; PN/RN 250 250
400 400
20 5
P1/R1 ; P/R ;
630 630
P1B/R1B ; PN/RN R-630T *) 2 x 630
20 ; 38 5 ; 9
1000 1000 38 ; 50 ; 63 8 ; 10 ; 13
P1/R1 ; P1B/R1B
1500 1500
1500T 2 x 1500
38 ; 50 ; 63 ; 80; 100 8 ; 10 ; 13 ; 16; 20
*) - there are no top mounted handweel for R-630T
Table 23: Sizes and weights of pneumatic actuators P/R and PN/RN - Fig. 8.
D
Actuator size
1
D 2
H 1
H 2
Weight [kg]
mm P/R PN/RN
250 240
324 486 10 14,5
225
400 305 332 494 16 20,5
630
305 424 586 30 37
375
R-630T - 638 - 45 -
1000 477 450 607 847 74 100
1500
- 704 - 95 -
550
1500T - 1008 - 200 -
Fig. 8. Actuators P/R, PN/RN
82
Single-ported globe control valves type Z1B